U.S. patent number 4,327,465 [Application Number 06/190,333] was granted by the patent office on 1982-05-04 for handle for tool having a tang.
Invention is credited to Fred A. Moritsch.
United States Patent |
4,327,465 |
Moritsch |
May 4, 1982 |
Handle for tool having a tang
Abstract
Disclosed herein is a handle for a tool having a shank, which
handle comprises identical first and second half sections in mating
engagement, which first and second half sections each include
cooperating wall means defining a socket for receiving the shank
and, when the shank is received in the socket, for preventing
relative movement between the half sections in each of three planes
mutually perpendicular to each other.
Inventors: |
Moritsch; Fred A. (Nipomo,
CA) |
Family
ID: |
22700910 |
Appl.
No.: |
06/190,333 |
Filed: |
September 24, 1980 |
Current U.S.
Class: |
407/29.15;
279/96; 30/340; 81/177.1; D28/57; D28/59 |
Current CPC
Class: |
B23D
71/04 (20130101); B25G 3/02 (20130101); B25G
3/10 (20130101); Y10T 279/17914 (20150115); Y10T
407/1825 (20150115) |
Current International
Class: |
B23D
71/04 (20060101); B23D 71/00 (20060101); B25G
3/00 (20060101); B25G 3/10 (20060101); B25G
3/02 (20060101); B23D 071/04 (); B25G 001/00 ();
B23B 005/22 () |
Field of
Search: |
;29/76R,78,80
;145/61C,61J ;81/177R ;279/96 ;30/340,342,329,332 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
|
|
|
|
|
209911 |
|
Oct 1955 |
|
AU |
|
7421538 |
|
Jan 1976 |
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FR |
|
Primary Examiner: Hinson; Harrison L.
Attorney, Agent or Firm: Michael, Best & Friedrich
Claims
I claim:
1. A handle for a tool having a shank, said handle comprising
identical first and second half sections in mating engagement, said
first and second half sections each including cooperating wall
means defining a socket for receiving the shank and, when the shank
is received in said socket, for preventing relative movement
between said half sections in each of three planes mutually
perpendicular to each other.
2. A handle in accordance with claim 1 wherein said half sections
are molded of plastic.
3. A handle in accordance with claim 1 wherein said cooperating
wall means includes respective mating surfaces on each of said half
sections in engagement transversely of the length of said half
sections to prevent relative movement therebetween in the
directions of the length of said half sections.
4. A handle in accordance with claim 1 wherein said cooperating
wall means includes respective mating surfaces on each of said half
sections in engagement transversely of a line extending
perpendicularly to the length of said half sections to prevent
relative movement therebetween in the directions of the line.
5. A handle in accordance with claim 1 wherein said cooperating
wall means includes respective first surfaces on each of said half
sections in engagement transversely of the length of said half
sections to prevent relative movement therebetween in the
directions of the length of said half sections and respective
second mating surfaces on each of said half sections in engagement
transversely of a line extending perpendicularly to the length of
said half sections to prevent relative movement therebetween in the
directions of the line.
6. A handle in accordance with claim 1 wherein said cooperating
wall means define, in each of said half sections, a peripheral
surface located in a mating plane, and inwardly of said peripheral
surface, a recessed portion, and a raised portion.
7. A handle in accordance with claim 6 wherein said half sections
each include a square end and a round end and wherein said raised
portion includes a lip located inwardly of said peripheral surface
and extending from said round end to said square end, and a raised
part spaced from said round end and from said square end and
located inwardly of said lip.
8. A handle in accordance with claim 7 wherein said recessed
portion includes an inside surface defining a recess bounded by
said peripheral surface, said inside surface including a margin
located adjacent said peripheral surface and engageable with the
lip of another half section to prevent relative movement of said
half sections in said mating plane.
9. A handle in accordance with claim 8 wherein said raised part and
said recessed portion are defined, in party, by an end surface
extending above and below said mating plane, whereby when said half
sections are engaged with each other, said end surface above said
mating plane on one of said half sections engages said end surface
below said mating plane on the other of said half sections to
prevent relative movement of said half sections in said mating
plane.
10. A handle in accordance with claim 8 wherein each of said half
sections includes a longitudinal center line extending between said
round end and said square end and wherein said raised part and said
recessed portion are defined, in part, by a side surface which
extends above and below said mating plane and adjacent to said
longitudinal center line.
11. A handle in accordance with claim 10 wherein said side surface
includes a groove which extends equally on each side of said mating
plane, and which has a cross-section which progressively decreases
at a uniform rate in the direction from said square end toward said
round end.
12. A handle in accordance with claim 10 wherein said groove
cross-section is rectangular.
13. A handle in accordance with claim 10 wherein said groove
cross-section is square.
14. A handle in accordance with claim 10 wherein said groove
cross-section is circular.
15. A handle in accordance with claim 10 wherein said groove
cross-section is elliptical.
16. A handle in accordance with claim 10 wherein said groove
cross-section is six sided.
17. A handle in accordance with claim 10 wherein said groove
cross-section is hexagonal.
18. A handle in accordance with claim 10 wherein said groove
cross-section is star-shaped.
19. A handle in accordance with claim 10 wherein said groove
cross-section is diamond-shaped.
Description
BACKGROUND OF THE INVENTION
The invention relates generally to handles for tools, such as
files, which have a tang or shank which is adapted to be received
in the handle, which is elongated, and which taper in the direction
of the the length of the tang.
SUMMARY OF THE INVENTION
The invention provides a handle for a tool having a shank, which
handle comprises identical first and second half sections in mating
engagement, which half sections each include cooperating wall means
defining a socket for receiving the shank and, when the shank is
received in the socket, for preventing relative movement between
the half sections in each of three planes mutually perpendicular to
each other.
In one embodiment of the invention, the cooperating wall means
includes respective mating surfaces on each of the half sections in
engagement transversely of the length of the half sections to
prevent relative movement therebetween in the directions of the
length of the half sections.
In one embodiment of the invention, the cooperating wall means
includes respective mating surfaces on each of the half sections in
engagement transversely of a line extending perpendicularly to the
length of the half sections to prevent relative movement
therebetween in the directions of the line.
In one embodiment in accordance with the invention, the cooperating
wall means define, in each of the half sections, a peripheral
surface located in a mating plane, and inwardly of the peripheral
surface, a recessed portion, and a raised portion.
In one embodiment in accordance with the invention, the half
sections each include a square end and a round end and the raised
portion includes a lip located inwardly of the peripheral surface
and extending from the round end to the square end, and a raised
part spaced from the round end and from the square end and located
inwardly of the lip.
In one embodiment in accordance with the invention, the recessed
portion includes an inside surface defining a recess bounded by the
peripheral surface, which inside surface includes a margin located
adjacent the peripheral surface and engageable with the lip of
another half section to prevent relative movement of the half
sections in the mating plane.
In one embodiment of the invention, the raised part and the
recessed portion are defined, in part, by an end surface which
extends above and below the mating plane, whereby when the half
sections are engaged with each other, the surface above the mating
plane on one of the half sections engages the surface below the
mating plane of the other half section to prevent relative movement
of the half sections in the mating plane.
In one embodiment of the invention, the raised part of the recessed
portion are defined, in part, by a side surface which extends above
and below the mating plane, and which includes a groove, which
extends equally on each side of the mating plane, and which has a
cross-section which progressively decreases at a uniform rate in
the direction from the square end toward the round end of the
handle.
Other features and advantages of the embodiments of the invention
will become known by reference to the following general
description, claims and appended drawings.
IN THE DRAWINGS
FIG. 1 is a perspective view of a file having a handle embodying
various of the features of the invention.
FIG. 2 is a view of the outside of one of the handle sections of
the handle shown in FIG. 1.
FIG. 3 is a view of the inside of the handle section shown in FIG.
2.
FIG. 4 is an end view of the handle section shown in FIG. 2.
FIG. 5 is a side view of the handle section shown in FIG. 2.
FIG. 6 is a sectional view of the handle taken along line 6--6 of
FIG. 3.
FIG. 7 is a sectional view of the handle taken along line 7--7 of
FIG. 3.
FIG. 8 is a sectional view of the handle taken along line 8--8 of
FIG. 3.
FIGS. 9 through 14 are views similar to FIG. 7 illustrating
modified handles for receiving tangs of different shapes.
Before explaining one embodiment of the invention in detail, it is
to be understood that the invention is not limited in its
application to the details of construction and the arrangement of
components set forth in the following description or illustrated in
the drawings. The invention is capable of other embodiments and of
being practiced and carried out in various ways. Also, it is to be
understood that the phraseology and terminology employed herein is
for the purpose of description and should not be regarded as
limiting.
GENERAL DESCRIPTION
Shown in the drawings is a handle 11 which is provided on a tang or
shank 13 of a tool 15, such as a file. As illustrated, the tool 15
includes a file part 17 and the tang 13 is elongated and extends
from one end of the file part 17, is of generally constant depth,
tapers in width from the file part 17 to the end of the tang, and
has a generally rectangular cross-section in a plane perpendicular
to the length of the tang.
The handle 11 consists of two identically constructed half sections
21 and 23 which can readily and desirably be fabricated of a
suitable plastic, as, for instance, by molding. When assembled, the
half sections 21 and 23 define a socket 25 for the tang 13, and
when the tang 13 is located in the socket 25, movement of the half
sections 21 and 23 relative to each other is prevented, without the
use of fasteners.
As both half sections 21 and 23 are identical, only the half
section 21 will be described. As shown, the handle half section 21
is generally elongated, having a round end 27, a spaced square end
29, and an outer surface 31 (See FIGS. 2 and 4) which is generally
convex in cross section taken at a right angle to the length of the
half section 21. The half section 21 further includes wall means
which cooperate with identical wall means on the half section 23 so
as to define the socket 25 and so as, when the tang 13 is in the
socket 25, the prevent relative movement between the half sections
21 and 23 in each of three mutually perpendicular planes.
The wall means are configured so as to define (See FIG. 3) a
relatively narrow peripheral surface 33 which extends in a mating
plane 35 (See FIGS. 4 through 8) and completely around the
periphery of the half section 21 except that the peripheral surface
does not extend completely along the square end 29 in order to
provide an opening 37 for access to the socket 25 which is formed
when the half sections 21 and 23 are assembled. The wall means is
also configured so as to define a raised portion 41 located
inwardly of the peripheral surface 33, and principally on the upper
part thereof as shown in FIG. 3, and a recessed portion 43 located
principally in the lower part therein as also shown in FIG. 3, for
receipt of the raised portion of the other handle half section
23.
The raised portion 41 includes a lip 51 which extends immediately
inwardly of the peripheral surface 33 and which includes an arcuate
portion 53 extending from the longitudinal center line 55 at the
round end 27 for slightly more than about 90.degree. about the axis
57, together with a generally straight portion 59 which extends
from the arcuate portion 53 to the square end 29. The end surface
52 of the lip 51 adjacent the round end 27 could be located on the
longitudinal center line 55 for mating engagement with the end
surface of the other half section. In the disclosed construction,
the end surface 52 is slightly spaced from the longitudinal center
line 55.
Extending inwardly of a central part of the straight portion 59 of
the lip 51 is a raised part 61 which extends to adjacent the
longitudinal center line 55 and which includes an upwardly inclined
surface 63 extending from the lip 51 and a top surface 65 extending
from the inclined surface 63 to adjacent the longitudinal center
line 55 and in generally parallel relation to the mating plane 35.
The raised part 61 is also defined by a side surface 71 which
extends perpendicularly to the mating surface 35 and adjacent to
the longitudinal center line 55 and which extends to the inner
surface of the recessed portion 43 as will be explained
hereinafter. If desired the side surface 71 could extend to the
longitudinal center line 55 for mating engagement with the side
surface of the other half section. In the disclosed construction,
the side surface 71 is spaced somewhat from the longitudinal center
line 55.
In addition, the raised portion includes a left end and a right
end, which ends are defined by respective surfaces 73 and 75 which
extend above and below the mating plane 35 and to the inner surface
of the recessed portion 43 which will be explained hereinafter.
The recessed portion 43 includes an inner or inside surface 81
which is spaced from the outer surface 31 at a generally uniform
distance except that, adjacent to the lip 51, the inner surface 81
is spaced from the outer surface 31 at a distance equal to the
width of the peripheral surface 33 and the lip 51. The inner
surface 81 merges into the side surface 71 and includes adjacent
the peripheral surface 33 a margin 83 which engages the lip 51 of
the half section 23 so as to prevent relative movement between the
half sections 21 and 23 in the mating plane 35 in one direction
along the center line 55 and in both directions along a line 85
perpendicular to the center line 55.
The recessed portion 43 also includes a recess segment 91 which
extends, at the round end 27, into the upper part in an area
defined by the inner surface 93 of the lip 51 and by the right end
surface 75 of the raised part 61. In the area of the recess segment
91, the inside surface 81 merges into the right end surface 75 and
the inner surface 93 of the lip 51.
The recessed portion 43 also includes a recess segment 95 which
extends at the square end 29 to the inner surface 93 of the lip 51
and from the square end 29 to the left end surface 73 of the raised
part 61. In the area of the recess segment 95, the inside surface
81 merges into the left end surface 73 and the inner surface 93 of
the lip 91.
As a consequence of the structure disclosed above, when the handle
sections 21 and 23 are joined together, the peripheral surfaces 33
mate with each other and the lip 51 of one of the half sections is
matingly engaged with the margin 83 of the inside surface 81 of the
other half section so that the interfitting relationship between
the lip 51 and the margin 83 prevents movement between the half
sections 21 and 23 in the mating plane 35 as already explained.
In addition, mating engagement between the right end surface 75
above the mating plane 35 on one of the half sections 21 and 23 and
the right end surface 75 below the mating surface on the other of
the half sections 21 and 23 prevents relative movement between the
half sections 21 and 23 in the mating plane 35. Thus, interfitting
of the half sections 21 and 23 prevents relative movement in any
direction in the mating plane.
The height of the raised part 61 from the mating plane 35 is less
than the depth of the recess so that the raised part 61 of one of
the half sections 21 and 23 may be wholly received within the
recessed portion 43 of the other of the half sections 21 and
23.
In order to provide the socket 25, the side surface 71 is provided
with a groove 101 which extends in parallel relation to the mating
plane 35 and to an equal extent on each side of the mating plane
35. In order to obtain the desired taper, the groove 101 has a
maximum depth at the left end surface 73 of the raised part 61 and
progressively diminishes in depth until adjacent to the right end
surface 75 of the raised part 61. As a consequence, when the handle
half sections 21 and 23 are assembled, the grooves 101 define
therebetween the socket 25 which is centered on the longitudinal
center line 55 and on the mating plane, and which tapers from the
left to the right. In addition, the presence of the tool tang 13 in
the socket 25 prevents relative movement of the handle sections 21
and 23 in the directions away from the mating plane 35.
Because of the tapered form of the tool tang 13 and of the socket
25 therefor, frictional resistance will normally hold the tang 13
in the handle 11. Furthermore, gripping of the handle by a user
will hold together the half sections 21 and 23, thereby further
increasing the force holding the tool 15 in the handle 11.
FIG. 9 is illustrative of a handle configured to receive a tang 13
having a tapering hexagonal cross section. As illustrated, the
handle half sections 21 and 23 define a tapering hexagonal socket
25 which diminishes in cross section from the square end to the
round end of the handle.
FIG. 10 is illustrative of a handle configured to receive a
tapering tang 13 which has a cross section in the shape of an
equiangular triangle. As illustrated, the handle half sections 21
and 23 define a tapering socket 25 which has the shape of a
six-sided star and which diminishes in cross section from the
square end to the round end of the handle.
FIG. 11 is illustrative of a handle configured to receive a
tapering tang 13 having an elliptical cross section. As
illustrated, the handle half sections 21 and 23 define a tapering
socket 25 which has an elliptical shape and which diminishes in
cross sectional dimension in the direction from the square end to
the round end of the handle.
FIG. 12 is illustrative of a handle configured to receive a conical
tang 13 which has a circular cross section. As illustrated, the
handle half sections 21 and 23 define a conical socket 25 which
diminishes in cross section from the square end to the rounded end
of the handle.
FIG. 13 is illustrative of a handle configured to receive a tang 13
having a square or diamond-shaped cross section. As illustrated,
the handle half sections 21 and 23 define a square or
diamond-shaped socket 25 which diminishes in cross section from the
square end to the round end of the handle.
FIG. 14 is illustrative of a handle configured to receive a tang 13
having a free form cross section which tapers in the direction of
the length of the tang. As illustrated, the handle half sections 21
and 23 define a socket of free form cross section which diminishes
in dimension from the square end to the round end of the
handle.
In all of the embodiments of FIGS. 9 through 14, receipt of the
tang 13 in the socket 25 prevents separation of the handle half
sections 21 and 23 away from each other in directions normal to the
peripheral surfaces.
Various of the features of the invention are set forth in the
following claims.
* * * * *